I'm not sure what You think, but my idea is that when You make some item or item is created as ingame element with all attributes, there may be some random factor in attaching model.
For example: let's say gas mask have 3 or more models, when You craft one, it gets random model so same masks may have 3 different looks, players would not be looking same and wastelands will be more junkie, same thing with armors, hats etc so I think only problem is to make such models and ask our developers to apply such thing. One more advantage: some people would be searching for custom look and barter will be more interesting
Similar mechanism works well in Aion, there also everyone is looking different, but our wastelands may be much easier and this randomnes is exactly what You get on wastelands searching for junk and stuff - You never know what You find.
@foad why not
if someone have enough time to do such thing, it may be nice for raiders